Home / 143,653.14-198,239.43-79,121.13

Finding the Fourth Proportional to 143,653.14, 198,239.43 and 79,121.13

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Solution

The fourth proportional to 143,653.14, 198,239.43 and 79,121.13 is: 109,186.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,653.14 : 198,239.43 = 79,121.13 : x
  2. Step 2: Convert to fraction form
    143,653.14/198,239.43 = 79,121.13/x
  3. Step 3: Cross multiply
    143,653.14x = 198,239.43 × 79,121.13
  4. Step 4: Simplify right side
    143,653.14x = 15,684,927,712.16
  5. Step 5: Solve for x
    x = 15,684,927,712.16/143,653.14
  6. Step 6: Final answer
    x = 109,186.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.